1. Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology‐Head & Neck Surgery Stanford University School of Medicine Stanford California U.S.A.
2. Department of Physical and Rehabilitation Medicine Turku University Hospital and University of Turku Turku Finland
3. Clinique Bizet Paris France
4. Division of Pediatric Otolaryngology, Department of Otolaryngology‐Head & Neck Surgery Stanford University School of Medicine Stanford California U.S.A.